This is going to sound like a complete noob question, but here goes -  I've completed a big project that included 9 series of 15 episodes each. It ran over 3 years and there is a massive amount of bins. Some of the media is locked and I want to delete it. Going through each and every bin will take ages...

Is there an easy way to locate the bins that those locked media files in Media Tool live in? Perhaps something I can jump to right from Media Tool?

Using Media Composer 2021.6 Win

Corne Scheepers:

Perhaps something I can jump to right from Media Tool?

In the Media Tool, click on the fast menu (hamburger menu) and select 'Choose Columns'. Display the 'Lock' column, and then sort on that column. That ought to do it.